Filler for cables



Jan. 29, 1929. 1,700,434

M. C. DODGE FILLER FOR CABLES Filed June 8, 1926 M ifofl Dodge.

Patented Jan. 29, 1929.

UNITED STATES PATENT OFFICE.

MILO DODGE, OF AUBURN, NEW YORK, ASSIGNOR TO COLUMBIAN ROPE COMPANY, OF AUBURN, NEW YORK, A CORPORATION OF NEW YORK.

FILLER FOR CABLES.

Application filed June 8, 1926. Serial No. 114,539.

My invention relates to improvements in the construction of cables for electrical and similar uses and it consists especially in an improved type of filler for use in the construction of such cables whereby the normal strength of the filler is increased and at the same time an increased degree of compressibility of the filler is provided as well as better insulating properties, all as will be here inafter more fully described and claimed;

Referring to the accompanying drawings which are made a part hereof and on which similar reference characters indicate similar parts,

Figure 1 is a perspective view of a section of my improved filler, and Figure 2, a cross section through a cabl *of the type in which said filler is employed.

In said drawings, the portions marked indicate the wires, known as conductors, 11

the insulatin material immediately surrounding sai wires, known as conductors, 1 2 the filling material, and 13 the outside insulated cover or sheath. s

Aside from the fillingmaterial the cable is of substantially a common construction, consisting of conductors insulated from each other, either single wires or in groups ,of wires, in the usual form and each conductor or group ofconductors surrounded by wrappings of insulating material 11. The filler 12 in rope-like form, as shown in Figure 1, is interposed in said cable construction between the insulated conductors or group of;

. conductors as a heart or core and alway between the insulatin wrappings surrounding the conductors or roup of conductors and the cover or sheath, being bound thereto as the cover is formed thereon in the usual way. Filler material has-commonly been paper or jute rove of difierent character and forms. I have discovered that by combining a filling material composed of fibre, such as jute rove, enclosed in paper, as indicated in Figure 1, a better and more eflicient cable will result. Said filler consists of paper strips with fibrous material enclosed and wrapped by paper. The fibrous material may be of whatever character found appropriate and is so wrapped in the paper that its fibres are approximately parallel when packed into the cable structure.

Such construction lends additional strength to the filler,espeeially valuable during the process of manufacture of the cable; gives greater compressibility to the filler and allows a more compact cable structure with less air or moisture pockets; and at the same time increases the fiexiblity of the completed cable, and adds to the insulating properties through it compactness in the completed cable.

Having thus fully described my said invention, what I claim as new and desire to secure by Letters Patent, is:

1. A filler for electrical cables consistin of strands of fibre lying approximately parallel with each other and encased in paper, the fibre constituting the major portion of the filler, substantially as set forth.

2. A filler for cables consisting of strands of fibre lying approximately parallel and encased in astrip or strips of paper wrapped around said parallel strands of fibre, the fibre constituting the major portion of the filler, substantially as set forth.

.3. A cable comprising groups of conductors encased in an insulating material, a

'filler composed of fibre strands of which lie approximately parallel and are encased in paper and totally'surrounding s aid insulated conductors, the fibre'constituting the major portion of the filler and a sheath or casing forming the exterior of said cable. and bind- 'ing the whole together, substantially as set forth. 1 In witness whereof, I have hereunto set my hand at Auburn, New York, this 20th day of May, A. D. nineteen hundred and twenty-six. l

MIIlO c. bones. 

